A Random Discrete Filling Method of Pbx Explosive Particles

Abstract

The invention discloses a random discrete filling method for PBX explosive particles. The method is mainly used in a computer numerical simulation experiment under two-dimensional mesoscopic scale in an explosive particle pressing process. The method comprises the following mainly steps: firstly, inputting boundary conditions of a two-dimensional mesoscopic simulation system according to a real experiment process for pressing the PBX explosive particles; secondly, inputting different particle geometrical shape data according to an actual explosive sample; thirdly, sequentially and randomly generating various shapes of two-dimensional explosive particle geometrical data according to the sequence of the input explosive particle geometrical shape data, and generating a script file to store the generated two-dimensional circular explosive particle data into the script file; and fourthly, using a NairnMPM substance point method simulation software to calculate the script file, and carrying out a two-dimensional mesoscopic scale simulation experiment for pressing the PBX explosive particles. The method is relatively high in randomness, relatively large in filling density and relatively small in evacuated space, and is extremely approximate to a true technological process for pressing the PBX explosive particles.

Description

technical field [0001] The invention relates to the technical field of computer simulation of PBX explosives, in particular to a random discrete filling method of explosive particles, especially the simulation of PBX explosive pressing process on a two-dimensional mesoscopic scale, in which computer numerical simulation technology guides the formula design and production process of PBX It is widely used in fields such as mechanical property research. Background technique [0002] Energetic materials generally refer to explosives with high performance, and are widely used in the fields of national defense and national economy. It is a mixed explosive made of high-energy explosive crystal particles as the main filler, high molecular polymer or other additives as binder, and processed through a series of processes. Polymer Bonded Explosive (hereinafter referred to as PBX) is a typical composite material, and its properties are affected by various factors such as the internal c...

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Problems solved by technology

[0004] However, since the commonly used PBX compression molding simulation software is driven by commands, the operation is complex and difficult to get started. It is necessary to manually input a large number of repetitive PBX explosive particle filling distributions, and the process is cumbersome and time-consuming.

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